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UNITED STATES PATENT OFFICE.

WALTER P. CHAMBERLIN, OF HARTFORD, CONNECTICUT, ASSIGNOR OF ONE-HALF TO JOHN C. 'MEAD, OF SAME PLACE.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 241,616, dated May 17, 18811.

(No model.)

To all whom it may concern:

Be it known that I, WALTER. P. CHAMBER- LIN, of Hartford, in the county of Hartford and State of Connecticut, have invented acertain new and useful Improvement in WVindow- Sash Catches, of which therfollow-ing is a description, reference being bad to the accompanying drawings, where- Figure l is a front view of a portion of a window sash and easing bearing my said improvement. Fig. 2 is a view of the edge of the vertical rail of the sash. Fig. 3 is a view of that edge of the casing which meets or abuts against the vertical rail of the sash. Fig. 4 is a view of the sash and casing in central vertical section.

Mypresent invention consists in two pendulous spring-bolts. one located within the window-sash and the other within its casing, the two bolts being simultaneously actuated by a rotating key.

The letter a denotes the vertical rail of the sash, and 1) denotes the casing which meets or abuts against the sash.

The main feature of the catch is a bolt or hook which is both pendulous and elastic.

The letter 0 denotes the bolt or hook proper, attached to the leaf-spring d, which is attached by its upper end to the sash, the whole lying in a mortise out in the edge of the sash. When not interfered with the bolt proper, c,impelled thereto by spring d, strikes into the mortise e, of which there may be as many as are desired, and holds the sash locked in position. Mortise e isin the casing. This mortise e is closed against the bolt 0 when desired, as follows: A similar pendulous ahd elastic bolt is hung in the casing, upon the back side of the plate f, its spring tending to draw the bolt proper back into the casing. When the bolt is thrown forward it will till the mortise e and prevent the sash-bolt from striking intoit; not only so, but when the sash is locked it can be unlocked by throwing the bolt in the casing forward. This forward movement of the bolt in the casing is effected by means of a key, 9, which may be a simple atfair or it may have elaborate wards and corresponding parts within the casing.

It is obvious that the bolt which is shown as in the sash may be located in the casing, and that the bolt which is shown as in the casing may be located in the sash, likewise the key, and that the apparatus will work substantially the same.

The key may be removed like the key of a look when desired.

When it is desired to look a bolt it may be done by having an eye, It, made appurtenant thereto, and using a pin, 5, to pass into such eye.

I claim as my invention-- In a window-sash catch, two opposed pendulous spring-bolts, one located in the sash and the other in the casing, in combination with the rotating operating-key g, substantially as described.

WVALTER P. CHAMBERLIN.

Witnesses:

W. E. SIMONDS, JAMES J. GREENE. 

